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Viewing changes to erts/emulator/hipe/hipe_amd64_asm.m4

  • Committer: Bazaar Package Importer
  • Author(s): Sergei Golovan
  • Date: 2009-02-15 16:42:52 UTC
  • mfrom: (3.1.2 squeeze)
  • Revision ID: james.westby@ubuntu.com-20090215164252-q5x4rcf8a5pbesb1
Tags: 1:12.b.5-dfsg-2
Upload to unstable after lenny is released.

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Lines of Context:
erts/emulator/hipe/hipe_amd64_asm.m4
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 */
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`#define TEMP_RV                %rbx'
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/*
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 * TEMP_ARG{0,1,2}:
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 *      Used by NBIF_SAVE_RESCHED_ARGS to save argument
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 *      registers in locations preserved by C.
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 *      May be registers or process-private memory locations.
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 *      Must not be C caller-save registers.
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 *      Must not overlap with any Erlang global registers.
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 */
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`#define TEMP_ARG0      %r14'
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`#define TEMP_ARG1      %r13'
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`#define TEMP_ARG2      %rbx'
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dnl XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
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dnl X                                                           X
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dnl X                   hipe_amd64_glue.S support               X
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`/* #define NBIF_RET_3  'NBIF_RET(3)` */'
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`/* #define NBIF_RET_5  'NBIF_RET(5)` */'
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dnl
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dnl NBIF_SAVE_RESCHED_ARGS(ARITY)
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dnl Used in the expensive_bif_interface_{1,2,3}() macros to copy
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dnl the argument registers to locations preserved by C.
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dnl Currently, 1 <= ARITY <= 3, so this simply moves the argument
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dnl registers to C callee-save registers.
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dnl
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define(NBIF_MIN,`ifelse(eval($1 > $2),0,$1,$2)')dnl
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define(NBIF_SVA_1,`ifelse(eval($1 < NR_ARG_REGS),0,,`movq       ARG$1, TEMP_ARG$1; ')')dnl
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define(NBIF_SVA_N,`ifelse(eval($1 >= 0),0,,`NBIF_SVA_N(eval($1-1))NBIF_SVA_1($1,ARG$1)')')dnl
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define(NBIF_SAVE_RESCHED_ARGS,`NBIF_SVA_N(eval(NBIF_MIN($1,NR_ARG_REGS)-1))')dnl
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`/* #define NBIF_SAVE_RESCHED_ARGS_1 'NBIF_SAVE_RESCHED_ARGS(1)` */'
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`/* #define NBIF_SAVE_RESCHED_ARGS_2 'NBIF_SAVE_RESCHED_ARGS(2)` */'
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`/* #define NBIF_SAVE_RESCHED_ARGS_3 'NBIF_SAVE_RESCHED_ARGS(3)` */'
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`#endif /* HIPE_AMD64_ASM_H */'